Why Xiaomi Redmi Note 8T is constantly rebooting and how to fix it

Your Xiaomi Redmi Note 8T suddenly started to reboot in a loop, preventing you from even unlocking the screen? This problem is familiar to many owners of the model released in 2019. The causes can be due to software failures (damaged firmware, conflicting applications) and hardware malfunctions (bloated battery, damaged motherboard), 80% of the time the problem can be solved on their own without going to the service center.

In this article, we will look at all the possible causes of the Redmi Note 8T cyclic reboot (codename willow) and offer step-by-step instructions, from basic reboot to deep iron diagnostics. We will focus on typical user errors that make things worse (such as trying to flash a phone with a dead battery). If your device is stuck in a bootloop (infinite boot with the Mi logo), here you will find the latest solutions for MIUI 12/13/14 and Android 9/10/11.

1. Causes of the Redmi Note 8T's Constant Reboots

The Redmi Note 8T's cyclical reboot rarely occurs without a reason.

• 🔋 Battery: bloating, critical 0% charge or overheating (especially after falls).
• 📱 Firmware: Failure after update MIUI, casual ROM or interrupted.
• 🛠️ Hardware damage: oxidation of board contacts, chip heap (for example, PMIC — power-controller).
• 📲 Applications: viruses, conflicting services or system applications (e.g. com.miui.analytics).
• 🔌 Charger: non-original cables or power supplies with unstable voltage.

According to service center statistics, 65 percent of bootloops on the Redmi Note 8T are battery or firmware related, and the remaining 35 percent are split between board damage, viruses, and mechanical stresses (impacts, moisture). If the phone only reboots when it's connected to charging, the problem is almost always with the battery or power controller.

2.The first steps: what to do before resetting settings

Before resorting to radical measures (reset or flash), do these actions:

Forced reboot the phone (press Power + Volume up for 15 seconds)

Try charging your phone with the original cable from another power supply.

Extract. SIM-card and memory card (if any)

Connect your phone to your PC – is it defined as Qualcomm? HS-USB QDLoader 9008 (Brick sign")-->

If the phone ever turns on and gives access to the system, check:

1. Battery Temperature: Install the AIDA64 app and check the Battery section, Normal: 25-40°C. If above 45°C, turn off your phone immediately.
2. Battery Charge: In Settings → Battery, check the discharge schedule. Sharp jumps in charge indicate a battery malfunction.
3. Error logs: type ##4636## in the dialer, select Battery Information and see Health status. Unknown or Dead is a sign of critical wear and tear.

⚠️ Warning: If the phone reboots at a charge level below 15%, do not try to flash or reset it. First charge up to 50% of the original charger - otherwise you risk getting a brick".

3. Reset settings via Recovery Mode

If the Redmi Note 8T is turned on but reboots immediately, try resetting the settings via Recovery Mode, which works even if the phone doesn’t boot into the system.

Instructions:

1. Turn off the phone (squeeze the power for 10 seconds).
2. Press Power + Volume up at the same time and hold until the Mi logo appears.
3. In the Recovery menu, select the language (English / Chinese), then:

If you reset your phone again, the problem is deeper, either in the firmware or the hardware, and then move on to the next section.

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If in Recovery Mode the phone asks for a password but you don’t remember it, try connecting the device to your PC and using the Mi Unlock Tool (requires a tied Mi Account account).

4. Flashing through Fastboot (if the reset didn't help)

If the reset didn't fix the problem, it's likely that the firmware is damaged. For the Redmi Note 8T (willow), the official firmware is available on MIUI Downloads.

• 💻 Windows PC 7/10/11.
• 🔌 Original. USB-cable (better from the set).
• 📄 Fastboot firmware ROM for your model (for example, willow_global_images_V12.5.1.0.RCXMIXM).
• 🛠️ Mi Flash Tool (download from xiaomiflashtool.com).

Step-by-step:

1. Unpack the firmware in a folder without Cyrillic characters (for example, C:\ROM\willow).
2. Turn off the phone and transfer to Fastboot Mode: Press Power + Volume down.
3. Connect your phone to your PC. Android Bootloader Interface should appear in Device Manager.
4. Launch the Mi Flash Tool, specify the path to the firmware folder, and press Refresh. The device should be defined as COMX.
5. Select Clean All mode and press Flash.

The process will take 5-10 minutes. Once complete, the phone will automatically restart. If the firmware is successful, but the problem persists, it is the fault of iron (see section 6).

⚠️ Warning: Don't interrupt the firmware or shut down the cable! If the process is interrupted, the phone may turn into a brick (Qualcomm 9008) and require a recovery. EDL-Mode and Authorized Xiaomi Account.

5. Checking the battery and the power controller

If the software methods didn't help, the problem is almost certainly in the hardware.The Redmi Note 8T most often fails:

To check the battery itself:

1. Remove the back cover (need a mediator and a hair dryer to soften the glue).
2. Check the battery for bloating. The normal battery is flat, no bumps.
3. Call the battery contacts with a multimeter. The voltage should be 3.7-4.2V.

If the battery is swollen, replace it immediately - the risk of fire is high! 8T Suitable for original batteries BM4B Or analogues from Baseus, Xiaomi Original (price: ~1500–2500 ₽).

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Bloated battery is the most common reason for spontaneous reboots on smartphones older than 2 years. Even if the phone is working "normally", you can not ignore bloating!

6. Diagnostics of the motherboard

If the problem persists after the battery change and flashing, the motherboard is to blame.Typical malfunctions of the Redmi Note 8T:

• 🔥 Burnt out PMIC: The phone does not turn on without charging, overheats.
• 🔌 Oxidized contacts: reboots after moisture hits (even if the phone hasn't sunk).
• 📶 Problems with antenna module: phone reboots when calling or connecting to Wi-Fi.

To diagnose the fee:

1. Take the board off and inspect it under a magnifying glass. Blackened or bloated elements are a sign of overheating.
2. Check the multimeter power chain (Redmi Note 8T scheme is on phoneboard.ru).
3. If there is a soldering station, call the battery tracks to the PMIC (Qualcomm PMI8998 chip).

If you're not sure about your skills, you should go to the service.

• Replacement PMIC: 3000–5000 ₽.
• Interconnection of memory chips: 4000-7000 ₽.
• Oxidation cleansing: 1500–2500 ₽.

7. Alternative solutions (if nothing has worked)

If all of the above methods fail, try:

• 🔄 Reverse to the old version MIUI: sometimes new updates contain critical bugs. Download the old firmware with Xiaomi Firmware Updater and run through Fastboot.

If the phone only restarts under certain conditions (such as when the camera or games are running), the problem may be:

• 🎮 Overheating of the processor: clean the phone of dust, replace the heat paste.
• 📷 Camera malfunctions: disable the camera app in the settings or stitch the camera module separately.

FAQ: Frequent questions about Redmi Note 8T reboots